Unity

We already have an existing 3d interactive application for windows, mac, and iOS devices and have planned to move that app to the web for high availability to different types of users. I have been searching for different options for it. Our existing application is made in Unity so we prefer to work on unity webgl but it also has its drawbacks. Other than that we are also thinking to change the tech stack to three.js or BabylonJS due to their high compatibility with the web ecosystem. I want to know which engine/library/framework we should use for the development of our 3d web application. Also with unity webgl, we want to develop all UI parts in web technologies only and will use the unity3d for 3d part only.

Points that are very important to consider -

1. Memory optimization and allocation
2. Quality
3. Shaders
4. Materials
5. Lighting
6. Mesh editing, mesh creation at runtime
7. Ar
8. Vr
9. Support on different browsers including mobile browsers
10. Physics(gravity, collision, cloth simulation, etc.)
11. Initial load time
12. Speed and performance
13. Max vertices count. What happens when we load models exceeding max vertex count?
14. Development time
15. Learning curve (Unity3d we already working on)
16. Ease of use. What artists can do using any platform eg. in unity3d, artists can edit materials, set up lighting etc?
17. Future scope
18. Scalability
19. Integration with web ecosystem

JetBrains Rider massively improves production speed and value. It's hard to find a tool/IDE that is so well designed like Rider (especially for Unity).

The folks at ReSharper do an awesome job with resharper-unity plugin. They even have a more in depth explanation of common issues in Unity than Unity itself.

PubNub is a great tool for developers looking for an easy to use, real-time messaging service. PubNub's Publish/Subscribe APIs are some of the easiest to use in the industry, and their speed and reliability of service are unparrell. While many companies out there offer a wide range of pubsub and message queuing services, I've personally found that PubNub is the easiest to setup and get started with. When I was an indie game developer, I used PubNub as the realtime chat component in my application, and it also powered realtime drawing between players. The cost compared to spinning up my own servers globally was much cheaper, and I was happy that I decided to go with PubNub. While you could build it yourself, why when PubNub makes it so easy to get something up and running. Spend less time coding and more time marketing, that's always been my philosophy. PubNub Unity

I recently used PubNub to implement a realtime leaderboard into my Unity game. It was easy and straight forward to get up and running. I choose Pubnub because they had a Unity SDK and an example project which showed me how to use it. I downloaded the example project and tweaked it to fit my game.

In their documentation I found good information about what I needed to know. Also, their support is very helpful when you have questions.